X0206 3 2021-07-22 0 0001841804 INSTRUCTURE HOLDINGS, INC. INST 0001813487 THOMA BRAVO UGP, LLC C/O THOMA BRAVO, L.P. 150 NORTH RIVERSIDE PLAZA, SUITE 2800 CHICAGO IL 60606 0 0 1 0 0001874229 THOMA BRAVO PARTNERS XIII, L.P. C/O THOMA BRAVO, L.P. 150 NORTH RIVERSIDE PLAZA, SUITE 2800 CHICAGO IL 60606 0 0 1 0 0001744119 THOMA BRAVO FUND XIII, L.P. C/O THOMA BRAVO, L.P. 150 NORTH RIVERSIDE PLAZA, SUITE 2800 CHICAGO IL 60606 0 0 1 0 0001744118 THOMA BRAVO FUND XIII-A, L.P. C/O THOMA BRAVO, L.P. 150 NORTH RIVERSIDE PLAZA, SUITE 2800 CHICAGO IL 60606 0 0 1 0 0001759152 THOMA BRAVO EXECUTIVE FUND XIII, L.P. C/O THOMA BRAVO, L.P. 150 NORTH RIVERSIDE PLAZA, SUITE 2800 CHICAGO IL 60606 0 0 1 0 Common Stock, par value $0.01 per share 122065804 I See footnote Consists of 1,073,324 shares held directly by Thoma Bravo Executive Fund XIII, L.P. ("TB Exec Fund"), 56,619,128 shares held directly by Thoma Bravo Fund XIII, L.P. ("TB Fund XIII"), and 64,373,352 shares held directly by Thoma Bravo Fund XIII-A, L.P. ("TB Fund XIII-A"). Thoma Bravo Partners XIII, L.P. ("TB Partners XIII") is the general partner of each of TB Exec Fund, TB Fund XIII and TB Fund XIII-A. Thoma Bravo UGP, LLC ("TB UGP") is the ultimate general partner of TB Partners XIII. By virtue of the relationships described in this footnote, TB UGP and TB Partners XIII may be deemed to exercise voting and dispositive power with respect to the shares held directly by TB Exec Fund, TB Fund XIII and TB Fund XIII-A. Each of TB UGP and TB Partners XIII disclaims beneficial ownership of the shares owned by TB Exec Fund, TB Fund XIII, and TB Fund XIII-A except to the extent of its pecuniary interest therein. /s/ Holden Spaht, Managing Partner of Thoma Bravo, UGP, LLC 2021-07-22 /s/ Holden Spaht, Managing Partner of Thoma Bravo, UGP, LLC, the General Partner of Thoma Bravo Partners XIII, L.P. 2021-07-22 /s/ Holden Spaht, Managing Partner of Thoma Bravo, UGP, LLC, the ultimate GP of Thoma Bravo Fund XIII, L.P. 2021-07-22 /s/ Holden Spaht, Managing Partner of Thoma Bravo, UGP, LLC, the ultimate GP of Thoma Bravo Fund XIII-A, L.P. 2021-07-22 /s/ Holden Spaht, Managing Partner of Thoma Bravo, UGP, LLC, the ultimate GP of Thoma Bravo Executive Fund XIII, L.P. 2021-07-22